Pulverizing-machine



C. E. BRAINARD.

PULVERIZING MACHINE.

APPLICATION FILED IAII. 8. 1920.

Patented Nov.

Warn( 'cm W@ UNITED STATES CHARLES E. BRAINARD, 0F CHICAGO, ILLINOIS.

PULVERIZING-MACHINE.

Specification of Letters Patent. Patented Noivl 30, '1920.

Application filed January 8, 1920.` Serial No. 350,159.

To all whom t may concern Be it known that I, CHARLES E. BRAINARD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pulverizing-Machines, of which the following is a specification.

This invention relates to improvements in pulverizing machines.`

One of the objects of the invention is to provide an improved rotatable machine for cortinuously pulverizing granulated materia Another' object is to provide a machine in which a loose revoluble, floating weight, carried by an inclosing, rotatable casing, provides tapered passage ways between its crushing surfaces and the confronting surfaces of the casing to contain the material acted upon, in graduated sizes, whereby to provide continuous crushing operation of the machine. y?, l

Another object of the invention is to provde renewable crushing surfaces for the casing and means for adjusting the surfaces with respect to coperating surfaces.

Other and more particular objects of the invention will become readily apparent,'to persons skilled in the art, from a consideration'of the following description when taken in conjunction with the drawings, where- 1n line 1-1 of Fig. 3.

` Fig. 2 isy a section taken on line 2-2 of Fi 1.-

ig. 3 is a section taken on line 3--3 of Fi 1.

In all of the views the same. reference characters are employed to indicate similar parts. Y

5 is a cylindrical part or sleeve of the casing, expanded at its inner end to provide a part 6 which forms a member of the crushing casing. 7 is another member of the crushing casing, having an axial opening, as at 8, and secured to the member 6v by bolts 9. Located inside of the casing, composed of the parts 6 and 7, is a ring 10 of suitable, refractory material, that `is inherently hard, or hardened by any process, necessary to withstand the attrition of the material being pulverized. 11 is a ring,

or gasket, placed 1n the member 7 and adapt- 4ed to be reduced'in thickness, to provide, in

- of the crushing member, I Figure 1 is a longitudinal section taken on 4face of the ring 15, to

crushing chamber, between the members 6 and 7 is a tapered weight or Afloating ring ky15, somewhat smaller in diameter, and of preferably ring form, having an aXial open-v ing 16. The weight is loose inl the composite casing having'no connection therewith except as a result of the effect of gravity. The 4weight or ring is madeof a hardened material or has its surfaces case hardened or tempered to withstand the abrading effects of the material for which -it is employed to crush.V The weighted ring 15, rolls around in the casing as the latter is revolved, and the sides of the ring being tapered, the crushing effect is produced between the tapered sides of the ring and the inclined hardened rings 12 and 13, and also between the end of the crushing ring 15 and .the replaceable ring 10 of the casing. That the material may more conveniently lind its way between the crushing surfaces may provide tangentially inclined grooves 17, in the tapered convey the material from the Aopening 16, of the ring, 'to points nearer its peripheral surface. Since there is a tapering space 18 on each side of the aXis of the ring 15 and between its peripheral surface and the confronting surfaces of the rings l2 and 13, this, in'most instances is suflicient to distribute the material and, therefore, in some instances the tangential grooves 17 will not be necessary.\/

The revolving casing is supported by the sleeve, or hollow cylinder 5, in bearing 20 provided on the base 21. A gear wheel 22 `is secured tothe sleeve, or cylinder 5,'for the purpose of rotating the casing.

A p1pe 23 is secured to a flange 24 that is located upon the end of the sleeve 5, and within which the sleeve rotates.4 The pipe 23 is for connection with an air moving exhaustfan or Wateriump to induce a draft of air or stream of Water through the ypul verizing machine. Located inside of the cylinder 5 are a series of spaced apart, in- Wardly extending abutments 24, in the form of screw threads, and extending spirally through the cylinder so that any relatively heavy material that may find itself Within the cylinder will lodge behind the blades and be carried upwardlyby the rotation of the device, when it Will drop between contiguous abutments that are inclined toward the crushing portion of the casing and finally Will iind its Way back into the casing, there to be crushed.

Abutments are located in the opening 8, of the crushing casing, so as to direct the material that may fall thereon into the interior thereof. A hopper 26 is located above a chute 2T having its inner end introduced into the opening 8. by Which the material to be (rushed is led into the crushing casing. A. valve, or door 29, is hinged to the discharge end of the opening into the casing so as lto serve as means for regulating the flow of material therein.

While I have herein shown a single einbodiment of-my invention, for the purpose of clear disclosure, it Will be manifest, to persons skilled in the art, that considerable variation in configuration and disposition of the parts may be made Within the scope of the appended claim.

Having described my invention what I claim as new and desire t0 secure by Letters Patent is A machine of the character described having inYcombinative,association a rotatable two-part casing with two removable, radially converging, crushing side members therein; means to adjust the casing members to compensate for Wear of the side mem.

bers, comprising a ring adapted to be reduced in thickness and bolts holding the said casing members together against the ring and a tapered crushing ring, having radially converging side surfaces, floating Within said casing.

In testimony whereof I hereunto subscribe my name.

CHARLES E. BRAINARD. 

